A teacher of mathematics has a great opportunity. If he fills his allotted time with drilling his students in routine operations he kills their interest, hampers their intellectual development, and misuses his opportunity. But if he challenges the curiosity of his students by setting them problems proportionate to their knowledge, and helps them to solve their problems with stimulating questions, he may give them a taste for, and some means of, independent thinking.

A wealthy doctor who can help a poor man, and will not without a fee, has less sense of humanity than a poor ruffian who kills a rich man to supply his necessities. It is something monstrous to consider a man of a liberal education tearing out the bowels of a poor family by taking for a visit what would keep them a week.

In The Tatler: Or, Lucubrations of Isaac Bickerstaff, Esq (8 Oct 1709), collected in Harrison’s British Classicks (1785), Vol. 3, No. 78, 220. Isaac Bickerstaff was the nom de plume used by Richard Steele, who published it—with uncredited contributions from Joseph Addison under the same invented name. The original has no authorship indicated for the item, but (somehow?) later publications attribute it to Addison. For example, in Samuel Austin Allibone (ed.), Prose Quotations from Socrates to Macaulay (1876), 535.

Every morning in Africa, a Gazelle wakes up. It knows it must run faster than the fastest lion or it will be killed. Every morning a Lion wakes up. It knows it must outrun the slowest Gazelle or it will starve to death. It doesn't matter whether you are a Lion or a Gazelle; when the sun comes up, you'd better be running.

As seen in The Economist (1985), 296, 37. Sometimes cited in other sources as an African proverb. For example, referred as from a poster of an old African proverb in Venise T. Berry, So Good (1996), 241.

Gravity, a mere nuisance to Christian, was a terror to Pope, Pagan, and Despair. You can drop a mouse down a thousand-yard mine shaft; and, on arriving at the bottom, it gets a slight shock and walks away, provided that the ground is fairly soft. A rat is killed, a man is broken, a horse splashes.

Essay, 'On Being the Right Size', collected in Possible Worlds: And Other Essays (1927, 1945), 19. (Note: Christian appears in John Bunyan, Pilgrim’s Progress, in which Pope, Pagan and Despair are giants — Webmaster.)

He who joyfully marches to music in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would fully suffice. This disgrace to civilisation should be done away with at once. Heroism at command, senseless brutality, deplorable love-of-country stance, how violently I hate all this, how despicable and ignoble war is; I would rather be torn to shreds than be part of so base an action! It is my conviction that killing under the cloak of war is nothing but an act of murder.

History … celebrates the battlefields that kill us, but keeps silent on the crop fields that sustain us. It knows the bastards of kings, she doesn’t know the origin of wheat. This is the way of human folly.

From the original French, “L’histoire … célèbre les champs de bataille qui nous tuent, elle garde le silence sur les champs de culture qui nous font vivre; elle sait les bâtards des rois, elle ne sait pas l'origine du froment. Ainsi le veut la sottise humaine,” in Les Merveilles de l'Instinct Chez les Insectes: Morceaux Choisis (The Wonders of Instinct in Insects: Selected Pieces) (1913), 242. English version by Webmaster using Google to translate literally and indicate the context is lamenting that history has not preserved the origins of food cultivation. The translation usually seen is “History celebrates the battlefields whereon we meet our death but scorns to speak of the ploughed fields whereby we live. It knows the names of the kings’ bastards, but cannot tell us the origin of wheat,” for example, in Alan L. Mackay, A Dictionary of Scientific Quotations (1991), 88.

I have never seen a food writer mention this, but all shrimp imported into the United States must first be washed in chlorine bleach to kill bugs. What this does for the taste, I do not know, but I think we should be told.

I never pick up an item without thinking of how I might improve it. I never perfected an invention that I did not think about in terms of the service it might give others. I want to save and advance human life, not destroy it. I am proud of the fact that I never invented weapons to kill. The dove is my emblem.

I wish people would more generally bring back the seeds of pleasing foreign plants and introduce them broadcast, sowing them by our waysides and in our fields, or in whatever situation is most likely to suit them. It is true, this would puzzle botanists, but there is no reason why botanists should not be puzzled. A botanist is a person whose aim is to uproot, kill and exterminate every plant that is at all remarkable for rarity or any special virtue, and the rarer it is the more bitterly he will hunt it down.

Address to the Joint Defense Appeal of the American Jewish Committee and the Anti-Defamation League of B'nai B'rith, Chicago (21 Jun1961). In Sue G. Hall (ed.), The Quotable Robert F. Kennedy (1967), 120.

Man must at all costs overcome the Earth’s gravity and have, in reserve, the space at least of the Solar System. All kinds of danger wait for him on the Earth… We are talking of disaster that can destroy the whole of mankind or a large part of it… For instance, a cloud of bolides [meteors] or a small planet a few dozen kilometers in diameter could fall on the Earth, with such an impact that the solid, liquid or gaseous blast produced by it could wipe off the face of the Earth all traces of man and his buildings. The rise of temperature accompanying it could alone scorch or kill all living beings… We are further compelled to take up the struggle against gravity, and for the utilization of celestial space and all its wealth, because of the overpopulation of our planet. Numerous other terrible dangers await mankind on the Earth, all of which suggest that man should look for a way into the Cosmos. We have said a great deal about the advantages of migration into space, but not all can be said or even imagined.

Nothing afflicted Marcellus so much as the death of Archimedes, who was then, as fate would have it, intent upon working out some problem by a diagram, and having fixed his mind alike and his eyes upon the subject of his speculation, he never noticed the incursion of the Romans, nor that the city was taken. In this transport of study and contemplation, a soldier, unexpectedly coming up to him, commanded him to follow to Marcellus, which he declined to do before he had worked out his problem to a demonstration; the soldier, enraged, drew his sword and ran him through. Others write, that a Roman soldier, running upon him with a drawn sword, offered to kill him; and that Archimedes, looking back, earnestly besought him to hold his hand a little while, that he might not leave what he was at work upon inconclusive and imperfect; but the soldier, nothing moved by his entreaty, instantly killed him. Others again relate, that as Archimedes was carrying to Marcellus mathematical instruments, dials, spheres, and angles, by which the magnitude of the sun might be measured to the sight, some soldiers seeing him, and thinking that he carried gold in a vessel, slew him. Certain it is, that his death was very afflicting to Marcellus; and that Marcellus ever after regarded him that killed him as a murderer; and that he sought for his kindred and honoured them with signal favours.

Sir Isaac Newton and Dr. Bentley met accidentally in London, and on Sir Isaac’s inquiring what philosophical pursuits were carrying on at Cambridge, the doctor replied—None—for when you go a hunting Sir Isaac, you kill all the game; you have left us nothing to pursue.—Not so, said the philosopher, you may start a variety of game in every bush if you will but take the trouble to beat for it.

From Richard Watson, Chemical Essays (1786, 1806), Vol. 4, 257-258. No citation given, so—assuming it is more or less authentic—Webmaster offers this outright guess. Watson was the source of another anecdote about Newton (see “I find more sure marks…”). Thus, one might by pure speculation wonder if this quote was passed along in the same way. Was this another anecdote relayed to Watson by his former teacher, Dr. Robert Smith (Master of Trinity House), who might have been told this by Newton himself? Perhaps we’ll never know, but if you know a primary source, please contact Webmaster.

Such is the condition of organic nature! whose first law might be expressed in the words 'Eat or be eaten!' and which would seem to be one great slaughter-house, one universal scene of rapacity and injustice!

The alternating current will kill people, of course. So will gunpowder, and dynamite, and whisky, and lots of other things; but we have a system whereby the deadly electricity of the alternating current can do no harm unless a man is fool enough to swallow a whole dynamo.

The Earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors, so that, in glory and triumph, they could become the momentary masters of a fraction of a dot. Think of the endless cruelties visited by the inhabitants of one corner of this pixel on the scarcely distinguishable inhabitants of some other corner, how frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds.

The girls are all giggling, then one girl suddenly remembersthe wild goat. Up there, on the hilltop, in the woodsand rocky ravines, the peasants saw him butting his headagainst the trees, looking for the nannies. He’s gone wild,and the reason why is this: if you don’t make an animal work,if you keep him only for stud, he likes to hurt, he kills.

The monstrous evils of the twentieth century have shown us that the greediest money grubbers are gentle doves compared with money-hating wolves like Lenin, Stalin, and Hitler, who in less than three decades killed or maimed nearly a hundred million men, women, and children and brought untold suffering to a large portion of mankind.

The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one … I do not believe that civilization will be wiped out in a war fought with the atomic bomb. Perhaps two thirds of the people of the Earth would be killed.

These turdy-facy-nasty-paty-lousy-fartical rogues, with one poor groat's worth of unprepared antimony, finely wrapt up in several scartoccios, are able, very well, to kill their twenty a week, and play; yet, these meagre, started spirits, who have half stopt the organs of their minds with earthy oppilations, want not their favorers among your shrivell’d sallad-eating artizans, who are overjoyed that they may have their half-pe’rth of physic; though it purge them into another world, it makes no matter.

This compassion, or sympathy with the pains of others, ought also to extend to the brute creation, as far as our necessities will admit; for we cannot exist long without the destruction of other animal or vegetable beings either in their mature or embryon state. Such is the condition of mortality, that the first law of nature is 'eat, or be eaten.' Hence for the preservation of our existence we may be supposed to have a natural right to kill those brute creatures, which we want to eat, or which want to eat us; but to destroy even insects wantonly shows an unreflecting mind, or a depraved heart.

Visualize yourself confronted with the task of killing, one after the other, a cabbage, a fly, a fish, a lizard, a guinea pig, a cat, a dog, a monkey and a baby chimpanzee. In the unlikely case that you should experience no greater inhibitions in killing the chimpanzee than in destroying the cabbage or the fly, my advice to you is to commit suicide at your earliest possible convenience, because you are a weird monstrosity and a public danger.

We must avoid war under all possible circumstances, except, my opinion, one: when the freedom of human beings is at stake. … I don't want to kill anybody. I am passionately opposed to killing, but I'm even more passionately fond of freedom.

You can stop splitting the atom; you can stop visiting the moon; you can stop using aerosols; you may even decide not to kill entire populations by the use of a few bombs. But you cannot recall a new form of life.

[The toughest part of being in charge is] killing ideas that are great but poorly timed. And delivering tough feedback that’s difficult to hear but that I know will help people—and the team—in the long term.

In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
(1987) -- Carl Sagan